Species description

Care, breeding and tankmates

Fish profile

Temperament

Semi-aggressive

Synodontis petricola is an incredibly peaceful, playful, and active species. When kept in appropriate groups, they are surprisingly bold and can be seen out and about during the day. They playfully chase one another without causing any harm or damage. Their charming demeanor makes them one of the most beloved catfish in the hobby.

Diet

Omnivore

Synodontis petricola is an unfussy omnivore that will eagerly consume almost any prepared or frozen food. In the wild, they graze on small invertebrates and organic detritus found among the rocks. Aquarists should feed a staple of sinking catfish pellets, supplemented with spirulina wafers and frozen bloodworms. They are enthusiastic eaters that actively forage across the substrate.

Sex ratio

Harem

They are highly gregarious and should be kept in a group of at least five or six individuals to display natural behavior. There is no required male-to-female ratio as they do not form territories or harems. In large groups, they will often school together, gracefully weaving through the rockwork. Solitary specimens become extremely reclusive and prone to stress-related illnesses.

Feeding frequency

Twice daily

They should be fed once or twice daily, with amounts they can completely consume in a few minutes. Unlike many nocturnal catfish, S. petricola is frequently active during daylight hours and will readily learn to come out at feeding time. Ensure that enough food sinks past top-feeding tankmates so these bottom dwellers get their share. Avoid chronic overfeeding to prevent obesity.

Bioload

This small Tanganyikan catfish produces a low to moderate bioload, making it suitable for many community setups. Their active metabolism means they produce a fair amount of waste for their size, but standard biological filtration handles it easily. Weekly water changes are highly recommended to maintain the high water quality they require. They thrive in mature, stable environments with negligible nitrate levels.

Flow

Stagnant

Endemic to the rocky shoreline of Lake Tanganyika, they appreciate moderate to brisk water flow. Good water movement provides the high levels of dissolved oxygen they need to remain active and healthy. Utilizing powerheads or wavemakers can recreate the surging currents of their natural habitat. However, they must be provided with deep rock crevices where the water flow is calm.

Reproduction

Oviparous

Unlike S. multipunctatus, S. petricola are typical egg-scatterers and do not parasitize cichlid broods. They spawn by releasing hundreds of tiny eggs among small stones or marbles in a breeding tank. Because they are avid egg eaters, the parents must be removed immediately after spawning to secure a harvest. Raising the minute fry requires specialized micro-foods like infusoria and newly hatched brine shrimp.

Compatibility & tankmates

They are remarkably peaceful and are excellent additions to hard-water community tanks. They associate perfectly with African cichlids, lively tetras, rainbowfish, and larger rasboras. Due to their small mouths, they pose no threat to anything other than the tiniest fry or newborn shrimp. They do not aggressively defend territory against other bottom dwellers.

Tank level

Middle/Bottom

They are dedicated bottom dwellers that rarely venture into the upper half of the water column. They constantly explore the substrate, heavily relying on complex rocky structures for cover and comfort. It is very common to see them resting upside down in tight caves. A tank with a large footprint and abundant rock piles is their ideal environment.